yum --disableexclude

To disable the excluded packages mentioned in a repo file, --disableexclude function is used by yum as follows :-

--disableexcludes=[all|main|repoid]
              Disable the excludes defined in  config files. Takes one of three options:
              all == disable all excludes
              main == disable excludes defined in [main] in yum.conf
              repoid == disable excludes defined for that repo